Exhibit 99.27 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-I KEY PERFORMANCE FACTORS September 30, 1998 Expected B Maturity 8/16/04 Blended Coupon 6.4806% Excess Protection Level 3 Month Average 5.36% September, 1998 4.43% August, 1998 6.37% July, 1998 5.26% Cash Yield17.36% Investor Charge Offs 5.18% Base Rate 7.74% Over 35 Day Delinquency 5.04% Seller's Interest13.10% Total Payment Rate13.10% Total Principal Balance$39,849,511,082.92 Investor Participation Amount$750,000,000.00 Seller Participation Amount$5,219,716,564.43